气候变化领域集成服务门户(CCPortal): Provision of primary NIST traceability to support vapor phase mercury emissions monitoring of combustion sources using isotope dilution inductively coupled plasma mass spectrometry

CCPortal

DOI	10.1016/j.apr.2020.02.003
	Provision of primary NIST traceability to support vapor phase mercury emissions monitoring of combustion sources using isotope dilution inductively coupled plasma mass spectrometry
	Long S.E.; Norris J.E.; Carney J.; Ryan J.V.
发表日期	2020
ISSN	13091042
英文摘要	Primary mercury gas standards, traceable to the SI, have been developed which can be used to underpin a NIST traceability framework for the calibration of vapor phase continuous emission monitoring systems (CEMS). A gas standard, which is based on a commercial gas generator, has been certified for gaseous elemental mercury output at specified generator output set points. The standard, termed the NIST Prime (NP) was certified at selected set points in the range 0.25 μg/m3 to 38 μg/m3 by isotope dilution inductively coupled plasma – mass spectrometry (ID-ICP-MS) using two alternative approaches, based on directly coupled gas sampling, and activated carbon sorbent trapping. Both approaches have been used to provide NIST traceability for electric utility mercury CEMS. The directly coupled method yielded expanded measurement uncertainties ranging from approximately 5.5% relative at 0.5 μg/m3, to approximately 1% relative at 38 μg/m3, and an estimated limit of quantitation (LOQ) of 0.06 μg/m3. The sorbent trapping method in contrast, yielded expanded uncertainties of approximately 1% relative at all sampling points, with an LOQ of 0.001 μg/m3. © 2020
英文关键词	Coal; Combustion sources; Electric utility; Inductively coupled plasma mass spectrometry; Isotope dilution mass spectrometry; Mercury emissions; Traceability
语种	英语
来源期刊	Atmospheric Pollution Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120643
作者单位	Chemical Sciences Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899, United States; Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory, Research Triangle ParkNC 27711, United States
推荐引用方式 GB/T 7714	Long S.E.,Norris J.E.,Carney J.,et al. Provision of primary NIST traceability to support vapor phase mercury emissions monitoring of combustion sources using isotope dilution inductively coupled plasma mass spectrometry[J],2020.
APA	Long S.E.,Norris J.E.,Carney J.,&Ryan J.V..(2020).Provision of primary NIST traceability to support vapor phase mercury emissions monitoring of combustion sources using isotope dilution inductively coupled plasma mass spectrometry.Atmospheric Pollution Research.
MLA	Long S.E.,et al."Provision of primary NIST traceability to support vapor phase mercury emissions monitoring of combustion sources using isotope dilution inductively coupled plasma mass spectrometry".Atmospheric Pollution Research (2020).